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| 1 | Synthesis of Alumina-Coated Natural Graphite for Highly Cycling Stability and Safety of Li-Ion Batteries显示文摘The natural graphite(NG)urdformly coated with alumina ceramics(Al2O3)was successfully synthesized through sol-gel method.The aluminum plastic film soft-packed battery prepared using Al2O3-coated NG as anode material exhibits excellent cycle performance and safety performance.The cycling retention of AN-1 is 84.95% after 200 cycles at a rate of 1 C in a potential window ranging from 3.0 to 4.35 V,which is much greater than 75.07% of NG under the same test conditions.The result of the nail penetration tests shows that the successful nail penetration rate of the NG used as anode is 0%,while that of Al2O3 coated samples AN-1 is 100%.The test results show that the Al2O3 coating could act as a solid electrolyte to suppress side reactions,improve cycle stability,and prevent a thermal runaway under mechanical abuse. | Tao Xu Chengkun Zhou Haihui Zhou Zekun Wang Jianguo Ren | 2019 | Chinese Journal of Chemistry2019，37，4： | 13 |
| 2 | Monthly survey of N-nitrosamine yield in a conventional water treatment plant in North China显示文摘A sampling campaign was conducted monthly to investigate the occurrence of N-nitrosamines at a conventional water treatment plant in one city in North China.The yield of N-nitrosamines in the treated water indicated precursors changed greatly after the source water switching.Average concentrations of N-nitrosodimethylamine(NDMA),N-nitrosomorpholine(NMOR),and N-nitrosopyrrolidine(NPYR) in the finished water were6.9,3.3,and 3.1 ng/L,respectively,from June to October when the Luan River water was used as source water,while those of NDMA,N-nitrosomethylethylamine(NMEA),and NPYR in the finished water were 10.1,4.9,and 4.7 ng/L,respectively,from November to next April when the Yellow River was used.NDMA concentration in the finished water was frequently over the 10 ng/L,i.e.,the notification level of California,USA,which indicated a considerable threat to public health.Weak correlations were observed between N-nitrosamine yield and typical water quality parameters except for the dissolved organic nitrogen. | Chengkun Wang Shuming Liu Jun Wang Xiaojian Zhang Chao Chen | 2015 | Journal of Environmental Sciences2015，27，12： | 11 |
| 3 | Detecting N-nitrosamines in water treatment plants and distribution systems in China using ultra-performance liquid chromatography-tandem mass spectrometry显示文摘N-nitrosodimethylamine (NDMA ) 和几另外的 N-nitrosamines 在在全世界在许多国家喝水作为消毒副产品被检测了。有稳固的阶段抽取样品准备的一个极端表演的液体 chromatographytandem 团 spectrometry 方法被开发在中国在几水处理植物和分发系统学习 N-nitrosamines 的出现。标记 N-nitrosodi-n-propylamine-d14 (NDPA-d14 ) 的同位素为 quantification 作为内部标准被选择。包括包括毛状的电压的 pH,丰富过程和 MS/MS 参数的稳固的阶段抽取过程,锥气体流动,锥电压,碰撞精力被优化为九 N-nitrosamine 种给 26% ~ 112% 的平均恢复。仪器察觉限制被估计从 0.5 ~ 5 g 吗?? | Chengkun WANG Xiaojian ZHANG Jun WANG Chao CHEN | 2012 | Frontiers of Environmental Science & Engineering2012，6，6： | 10 |
| 4 | A micro-adjusting attitude mechanism for autonomous drilling robot end-effector显示文摘Drilling end-effector is a key unit in autonomous drilling robot.The perpendicularity of the hole has an important influence on the quality of airplane assembly.Aiming at the robot drilling perpendicularity,a micro-adjusting attitude mechanism and a surface normal measurement algorithm are proposed in this paper.In the mechanism,two rounded eccentric discs are used and the small one is embedded in the big one,which makes the drill’s point static when adjusting the drill’s attitude.Thus,removal of drill’s point position after adjusting the drill attitude can be avoided.Before the micro-adjusting progress,four non-coplanar points in space are used to determine a unique sphere.The normal at the drilling point is measured by four laser ranging sensors.The adjusting angles at which the motors should be rotated to adjust attitude can be calculated by using the deviation between the normal and the drill axis.Finally,the motors will drive the two eccentric discs to achieve micro-adjusting progress.Experiments on drilling robot system and the results demonstrate that the adjusting mechanism and the algorithm for surface normal measurement are effective with high accuracy and efficiency. | YUAN PeiJiang WANG QiShen SHI ZhenYun WANG TianMiao WANG ChengKun CHEN DongDong SHEN LiHeng | 2014 | Science China(Information Sciences)2014，57，12： | 8 |
| 5 | Structural insights into DndE from Escherichia coil B7A involved in DNA phosphorothioation modification显示文摘 | Wei Hu Chengkun Wang Jingdan Liang Tianlong Zhang Zhongpei Hu Zhijun Wang Wenxian Lan Fang Li Houming Wu Jianping Ding Geng Wu Zixin Deng Chunyang Cao | 2012 | Cell Research2012，22，7： | 7 |
| 6 | Characterization of dissolved organic matter as N-nitrosamine precursors based on hydrophobicity, molecular weight and fluorescence显示文摘It is very important to identify the dominant precursors for N-nitrosamine formation from bulk organic matter, to enhance the understanding of N-nitrosamine formation pathways in water treatment plants and allow the development of practical treatment technologies. In this study, dissolved organic matter (DOM) from two source waters was fractionated with XAD resins and ultra- filtration membranes. The N-nitrosamine formation potential (FP) (ng of N-nitrosamines formed per mg of dissolved organic carbon (DOC)) from raw water and each fraction were measured and correlated with the fluorescence excitation-emission matrix (EEM), molecular weight (MW) and other assays. The results showed that the hydrophilic fraction had N-nitrosamine FP 1.3 to 3.5 times higher than the hydrophobic fraction from both source waters. The DOM fraction with low MW was the dominant fraction in these two source waters and contributed more precursors for N-nitrosamine formation than the larger MW fraction. The EEM spectra indicated there were notable amounts of soluble microbial products (SMPs) and aromatic proteins in the two studied rivers, which probably originated from wastewater discharge. The SMPs tended to be more closely correlated with N-nitrosodimethylamine formation potential than the other DOM components. Higher N-nitrosamine FP were also related to fractions with lower DOC/DON ratios and lower SUVA 254 values. | Chengkun Wang Xiaojian Zhang Jun Wang Chao Chen | 2013 | Journal of Environmental Sciences2013，25，1： | 5 |
| 7 | A Novel Strategy to Fabricate Core-Sheath Structure Piezoelectric Yarns for Wearable Energy Harvesters显示文摘Wearable and portable electronic devices based on textile structure have been widely used owing to their wearability and comfortableness.However,yarn fineness and the comfort of the fabric cannot satisfy the requirements of smart wearable devices.This work presents a novel strategy to prepare highly integrated PVDF/conductive nylon core-sheath structure piezoelectric yarns for wearable which is fabricated by combining electrospinning strategy with 2D braiding technology.The fineness of single yarns as well as strength are both improved significantly compared to previous works.The piezoelectric outputs of the yarn are still stable after 800 s fatigue test at a frequency of 4 Hz,and the cycle stability can maintain more than 3200 cycles.Furthermore,the piezoelectric yarns are further woven into piezoelectric plain fabric.According to the electrical performance,the length of the piezoelectric yarn and the thickness of the piezoelectric layer would both affect the output electrical performance.The yarn of the 10 cm in length and 600μm in fineness can produce an output voltage of 120 mV.Meanwhile,Both the piezoelectric yarn and the fabric could generate piezoelectric output signals through human movement,such as bending,walking.Therefore,the electrical and mechanical performance of the piezoelectric yarns prepared in our work could be improved significantly,and the comfortableness and durability performance of the piezoelectric fabric can satisfy most wearing requirements,which would provide some help in the field of piezoelectric wearable devices based on yarns and fabrics. | Lili Xue Wei Fan Yang Yu Kai Dong Chengkun Liu Yanli Sun Cong Zhang Weichun Chen Ruixin Lei Kai Rong Qi Wang | 2021 | Advanced Fiber Materials2021，3，4： | 3 |
| 8 | Modification of Hole Transport Layers for Fabricating High Performance Non-fullerene Polymer Solar Cells显示文摘Interfacial engineering is expected to be a feasible strategy to improve the charge transport properties of the hole transport layer(HTL),which is of crucial importance to boost the device performance of organic solar cells(OSCs).In this study,two types of alcohol soluble materials,2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane(F4-TCNQ)and di-tetrabutylammoniumcis-bis(isothiocyanato)bis(2,2'-bipyridyl-4,4'-dicarboxylato)ruthenium(ll)(N719)dye were selected as the dopant for HTL.The doping of F4-TCNQ and N719 dye in poly(ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)with and without integrating a graphene quantum-dots(G-QDs)layer has been explored in poly[[2,6'-4-8-di(5-ethylhexylthienyl)benzo[1,2-b:3,3-b]dithiophene][3-fluoro-2[(2-ethylhexyl)carbonyl]thieno[3,4-b]thio-phenediyl:(2,2'-((2Z,2'Z)-(((4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-2,7-diyl)bis(4-((2-ethylhexyl)oxy)thiophene-5,2-diyl))bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(PTB7-Th:IEICO-4F)OSCs.The power conversion efficiency of the non-fullerene OSCs has been increased to 10.12%from 8.84%.The influence of HTL modification on the nano-morphological structures and photophysical properties is analyzed based on the comparative studies performed on the control and modified devices.The use of chemical doping and bilayer strategy optimizes the energy level alignment,nanomorphology,hole mobility,and work-function of HTL,leading to considerable reduction of the leakage current and recombination losses.Our work demonstrates that the doping of HTL and the incorporation of G-QDs layer to constitute a bilayer HTL is an promising strategy to fabricate high performance non-fullerene polymer solar cells. | B.Hari Babu Chengkun Lyu Hongwei Zhang Zhihao Chen Fenghong Li Lin Feng Xiao-Tao Hao | 2020 | Chinese Journal of Chemistry2020，38，8： | 2 |
| 9 | Evidence combination method in time domain based on reliability and importance显示文摘In order to achieve the information fusion in the time domain based on the evidence theory, an evidence combination method in the time domain based on reliability and importance is proposed according to the idea of evidence discount. Firstly, the distortion of the time-domain evidence is judged based on single exponential smoothing. The real-time reliability of the evidence at the adjacent time is obtained by the real-time reliability assessment method of the evidence based on the credibility decay model.Then, the relative importance of the evidence at the adjacent time is obtained by comprehensively considering improved conflict degree and uncertainty. Finally, based on the criterion of evidence discount and the Dempster's rule of combination, the evidence combination is carried out to achieve the sequential combination of time-domain evidence. The numerical simulation and analysis show that this method has fully embodied the dynamic characteristics of time-domain evidence combination, and it has strong processing ability for conflict information and anti-disturbing ability.The proposed method has good applicability to information fusion in the time domain. | LUO Chengkun CHEN Yunxiang XIANG Huachun WANG Weijia WANG Zezhou | 2018 | Journal of Systems Engineering and Electronics2018，29，6： | 2 |
| 10 | SARS-CoV-2 Omicron RBD shows weaker binding affinity than the currently dominant Delta variant to human ACE2显示文摘Dear Editor,SARS-coronavirus-2(SARS-CoV-2)Omicron variant(B.1.1.529)is of great concern to the world due to its multiple mutations that may have an impact on transmissibility and immune evasion.1 Compared to the wild type(WT),Omicron carries as many as 30 single point mutations,3 deletion mutation and one insertion mutation on its spike protein.Strikingly,there are 15 mutations observed in the Omicron receptor-binding domain(RBD),10 of which are in the receptor-binding motif(RBM)that human angiotensin-converting enzyme 2(ACE2)and most monoclonal antibodies(mAbs)interact directly with.As a comparison,the currently dominant variant Delta(B.1.617.2)has only 2 mutations(L452R and T478K)in its RBM and additional K417N and E484K mutations sometimes.Therefore,Omicron variant may significantly impact the binding affinity to ACE2 and effectiveness of currently available mAbs.Consequently,Omicron mutant has aroused wide concern,many countries have taken measures on entry restrictions to prevent its rapid spread.However,the transmissibility and immune evasion risk of Omicron have not been properly evaluated. | Leyun Wu Liping Zhou Mengxia Mo Tingting Liu Chengkun Wu Chunye Gong Kai Lu Likun Gong Weiliang Zhu Zhijian Xu | 2022 | Signal Transduction and Targeted Therapy2022，7，2： | 2 |
| 11 | Preferen- tial growth of long ZnO nanowire array and its applica- tion in dye-sensitized solar cells 显示文摘 | XU Chengkun PAUL S CAO Liangliang | 2010 | Phys Chem: C2010，114，1： | 1 |
| 12 | Coagulation studies for cellulose in the ammonia/ammonium thiocyanate(NHa/NH4SCN) direct solvent system 显示文摘 | Liu Chengkun John A Cuculo Brent Smith | 1989 | J Polym Sci:Part B: Polymer Physics1989，27，12： | 1 |
| 13 | Effects of dams on water and sediment delivery to the sea by the Huanghe (Yellow River): The special role of Water-Sediment Modulation显示文摘 | Yu Yonggui Shi Xuefa Wang Houjie Yue Chengkun Chen Shenliang Liu Yanguang Hu Limin Qiao Shuqing | 2014 | Anthropocene2014，，： | 1 |
| 14 | Research on the threshold effect of population aging on the industrial structure upgrading in China显示文摘This paper constructs coefficients of the integral and the internal structure upgrading in the secondary and tertiary industries, selects per capita real gross domestic product as a threshold variable and build panel threshold model according to inter-provincial panel data of China from 1998 to 2016. Results indicated that population aging has a double threshold effect on the integral industrial structure upgrading, whose influence increases first and then decreases, significantly promoting the upgrading process. As for internal structure, population aging has no significant threshold effect on the upgrading in the secondary industry, but exerts a single negative threshold effect in the tertiary industry. When economic development is under the threshold, its negative impact is greater. Further analysis also suggests that regional differences exist significantly in the threshold effect of population aging on the industrial structure upgrading. | Chengkun Liu Shuyu Li Xindong Zhao | 2019 | Chinese Journal of Population,Resources and Environment2019，17，1： | 1 |
| 15 | Longwall mining under gateroads and gobs of abandoned small mine显示文摘Due to the use of outdated mining technology or room and pillar mining process in small coal mines, the coal recovery ratio is only 10–25%. In many regions of China, the damage area caused by the small coal mines amounted to nearly one hundred square kilometers. Therefore, special mining techniques must be taken to reclaim the wasted resource in disturbed coal areas. This paper focuses on the different mining methods by analyzing the longwall panel layout and abandoned gateroad(AG) distribution in the abandoned area of Cuijiazhai coal mine in northwestern China. On the basis of three-dimensional geological model, FLAC3 D numerical simulation was employed. The abutment pressure distribution was simulated when the panel face passed through the disturbed areas. The proper angle of the inclined face was analyzed when the panel face passed through the abandoned gateroads. The results show that the head end of the face should be 13–20 m ahead of the tail end. The pillars on both sides of abandoned gateroads had not been damaged at the same time, and no large-area stress concentration occured above the main roof.Therefore, the coal reserves of disturbed areas can be successfully recovered by using underground longwall mining. | Li Yang Zhu Enguang Zhang Kangning Li Minghao Wang Jiaxing Li Chengkun | 2017 | International Journal of Mining Science and Technology2017，27，1： | 1 |
| 16 | Ordered TiO2 nanotube arrays on transparent conductive oxide for dye-sensitized solar cells 显示文摘 | XU Chengkun SHIN P H CAO Liangliang | 2010 | Chemistry of Materials2010，22，1： | 1 |
| 17 | Inhibition of proliferation and induction of G1-phase cell-cycle arrest by dFMGEN, a novel genistein derivative, in lung carcinoma A549 cells显示文摘 | Bo Peng Jianguo Cao Sisi Yi Chengkun Wang Guopei Zheng Zhimin He | 2013 | Drug and Chemical Toxicology2013，，2： | 1 |
| 18 | Contemporary crustal deformation in east Asia constrained by Global Positioning System measurements显示文摘 | SHEN ZHENG-KANG ZHAO CHENGKUN YIN AN | 2000 | J Geophys Res2000，105，3： | 1 |
| 19 | Nonlinear theory for relativistic plasma wakefields in the blowout re- gime 显示文摘 | Lu Wei Huang Chengkun Zhou Miaomiao | 2006 | Phys Rev Lett2006，96，16： | 1 |
| 20 | Preferential Growth of Long ZnO Nanowire Array and Its Application in Dye-Sensi tized Solar Cells显示文摘 | Chengkun Xu Paul Shin Liangliang Cao | 2011 | J Phys Chem C2011，114，12： | 1 |
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